1. The amount of bromine is about 60～70 percent in bromized polystyrene.
   阻燃剂的含溴量达60—70%。
2. In this paper, bromized polystyrene flame retardant was synthesized by electrophilic substitution of waste polystrene with bromine using aluminium ehlorid as catalyst.
   本文利用三氯化铝作催化剂,废聚苯乙烯与溴发生亲电取代反应合成溴化聚苯乙烯阻燃剂。
3. p-Ethyl-phenylacetylene was synthesized from starting materials ethylbenzene via five steps by acylation、reduction、dehydration、bromize、eliminition reaction.And the conditions were optimized.
   以乙苯作为原料,通过乙酰化、还原、脱水、溴化和消除五步反应合成了乙基苯乙炔,并对反应条件进行了优化。

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